Closing plug for Demag AC80-1

The closing plug, part number 509 851 98, is a component used to seal ports and openings within the hydraulic or mechanical systems of the Demag AC80-1 crane. By securely closing these access points, the plug prevents the leakage of operating fluids such as hydraulic oil or lubricants and stops external contaminants like dust and moisture from entering the system. Maintaining these seals is necessary for the proper operation of the crane's internal circuits.

This component is specifically designed for the Demag AC80-1 model. It is engineered to fit into designated ports to ensure a secure closure. The plug is designed to accommodate the specific thread and seating requirements of the machine's fluid and mechanical assemblies.

In heavy machinery, closing plugs serve as a standard method for sealing off unused ports, inspection holes, or maintenance access points in hydraulic blocks, gearboxes, and fluid reservoirs. They are typically installed with a precise fit to ensure a tight seal against the internal operating pressures of the system, preventing fluid loss and protecting sensitive internal components from environmental exposure.